// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: Set entry removal and re-insertion during traversal using for..of
info: |
    Entries removed from a Set instance during traversal should be visited if
    they are re-inserted prior to iterator exhaustion.
es6id: 13.6.4
features: [Set]
---*/

function Test() {
    var set = new Set();
    var iterationCount = 0;

    var first = 0;
    var second = 1;

    set.add(0);
    set.add(1);

    for (var x of set) {
      assert.sameValue(x, first);

      first = second;
      second = null;

      if (first !== null) {
        set.delete(1);
        set.add(1);
      }

      iterationCount += 1;
    }

    assert.sameValue(iterationCount, 2);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
